A company recently upgraded from 100 Base to 1000 Baset. They didn't upgrade their UTP wiring, and they are having trouble with several of the cables on their network. They hired an expensive consultant who plugged in an expensive looking PDA-type thingy and told them that they were experiencing "crosstalk" on those cables. Which of the following would not help the company reduce or eliminate crosstalk on these cables? Replace the cable with higher quality cable with more twists. Make sure that the cable is not close to light fixtures or electric motors. Rewire the connectors on the cables that were untwisted by more than 1/2 inch. Replace the UTP cable with fiber. Your company is installing a 100BaseT network. An expensive consultant recommends that you install Cat 6 cable, which costs 13 cents per foot. Your boss thinks you should use Cat 5 e cabling because it only costs 7 cents per foot. Which of the following is bad advice about installing cabling? It is best to install the cheapest kind of cable. It is expensive to install cabling in old buildings. Higher grade cabling supports higher speed protocols. Most of the expense of installing cabling is labor. Which of the following effects limits the length of multimode fiber optic cable? Noise Crosstalk Modal Dispersion Interference Which of the following describes a bus/broadcasting topology? All of the hosts hear every signal, regardless of destination address. There is a "root," and all of the hosts are like "leaves" connected by "branches." The hosts are connected in a ring and messages are passed around. Messages have to be loaded onto a computer program called a "bus" that can hold up to 64 bytes at a time before the "bus" leaves for the next stop. Your company needs to ensure that the network connecting four of their downtown buildings will continuously run even if a cable is cut. Which technology would they implement? SONET Ring Ethernet PSDN PVC As you go to your cubicle one day on the 46 th floor, you notice that a workman is in a room you had never noticed before. Inside the room is a switch with something like 200 patch cables coming from it. When you ask him what the switch is for, he tells you that the patch cables are connections to each computer on the 45 th, 46 th, and 47 th floors, and that the switch connects to another, even more expensive switch on the 41 st floor using a single fiber optic cable. He also says that there are switches just like the one in this room in rooms on the 43rd and 49 th floors that also connect to the 41 st floor. What topology describes this network? Bus Star Mesh Extended star/Hierarchy. Your company is building a new office building. Looking over the blueprints you notice that 12 bundles of wires (totaling more than 300 wire pairs) run from a room on the first floor to rooms on other floors of your building. Four bundles of wires run from the first floor room to the second floor, four bundles run from this first floor room to the third floor, and four bundles run from this first floor room to the fourth floor. What topology describes this network? Bus Star Mesh Extended star/Hierarchy Three of the following would be considered "best practices" when making a patch cable. Which of the following is not necessary when you are putting an RJ 45 connector on UTP wire? Limiting the amount of jacket that is stripped off to 1/2 inch before untwisting and flattening. Making sure that the wires were not nicked by the stripping tool, Making sure that all eight wires go to the end of the connector. Double checking the wire order before crimping
